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Segment Information (All Registrants)
 12 Months Ended
Dec. 31, 2021
Segment Reporting [Abstract]  
Segment Information (All Registrants) Segment Information (All Registrants)
Operating segments for each of the Registrants are determined based on information used by the CODMs in deciding how to evaluate performance and allocate resources at each of the Registrants.
As of December 31, 2021, Exelon had eleven reportable segments, which included five reportable segments for Generation and ComEd, PECO, BGE, and PHI's three reportable segments consisting of Pepco, DPL, and ACE. ComEd, PECO, BGE, Pepco, DPL, and ACE each represent a single reportable segment, and as such, no separate segment information is provided for these Registrants. Exelon, ComEd, PECO, BGE, Pepco, DPL, and ACE's CODMs evaluate the performance of and allocate resources to ComEd, PECO, BGE, Pepco, DPL, and ACE based on net income.
The separation of Constellation Energy Corporation, including Generation and its subsidiaries, meets the criteria for discontinued operations and as such, results of operations are presented as discontinued operations and have been excluded from continuing operations for all periods presented. Furthermore, the reportable segment information related to the discontinued operations has been excluded from the tables presented below. See Note 2 — Discontinued Operations for additional information.
An analysis and reconciliation of the reportable segment information to the respective information in the Exelon consolidated financial statements for the years ended December 31, 2021, 2020, and 2019 is as follows:
ComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations		Exelon
Operating revenues(b):
2021
Electric revenues$6,406 $2,659 $2,505 $4,860 $— $(35)$16,395 
Natural gas revenues— 539 836 168 — — 1,543 
Shared service and other revenues— — — 13 2,213 (2,226)— 
Total operating revenues$6,406 $3,198 $3,341 $5,041 $2,213 $(2,261)$17,938 
2020
Electric revenues$5,904 $2,543 $2,336 $4,485 $— $(44)$15,224 
Natural gas revenues— 515 762 162 — — 1,439 
Shared service and other revenues— — — 16 2,035 (2,051)— 
Total operating revenues$5,904 $3,058 $3,098 $4,663 $2,035 $(2,095)$16,663 
2019
Electric revenues$5,747 $2,490 $2,379 $4,626 $— $(21)$15,221 
Natural gas revenues— 610 727 167 — — 1,504 
Shared service and other revenues— — — 13 1,921 (1,934)— 
Total operating revenues$5,747 $3,100 $3,106 $4,806 $1,921 $(1,955)$16,725 
Intersegment revenues(c):
2021$41 $21 $31 $13 $2,203 $(2,252)$57 
202037 9 20 17 2,024 (2,084)23 
201930 6 26 14 1,913 (1,948)41 
Depreciation and amortization:
2021$1,205 $348 $591 $821 $67 $1 $3,033 
20201,133 347 550 782 79 — 2,891 
20191,033 333 502 754 95 — 2,717 
Operating expenses:
2021$5,151 $2,547 $2,860 $4,240 $2,045 $(1,587)$15,256 
20204,950 2,512 2,598 4,045 1,882 (1,502)14,485 
20194,580 2,388 2,574 4,084 1,830 (1,383)14,073 
ComEdPECOBGEPHI
Other(a)
Intersegment
Eliminations		Exelon
Interest expense, net:
2021$389 $161 $138 $267 $335 $(1)$1,289 
2020382 147 133 268 380 (3)1,307 
2019359 136 121 263 343 — 1,222 
Income (loss) from continuing operations before income taxes:
2021$914 $516 $373 $603 $(149)$(603)$1,654 
2020615 417 390 418 (151)(597)1,092 
2019851 593 439 514 (127)(632)1,638 
Income taxes:
2021$172 $12 $(35)$42 $8 $(161)$38 
2020177 (30)41 (77)35 (153)(7)
2019163 65 79 38 (32)(160)153 
Net income (loss) from continuing operations:
2021$742 $504 $408 $561 $(156)$(443)$1,616 
2020438 447 349 495 (184)(446)1,099 
2019688 528 360 477 (95)(472)1,486 
Capital expenditures:
2021$2,387 $1,240 $1,226 $1,720 $67 $— $6,640 
20202,217 1,147 1,247 1,604 74 — 6,289 
20191,915 939 1,145 1,355 45 — 5,399 
Total assets:
2021$36,470 $13,824 $12,324 $24,744 $7,626 $(8,319)$86,669 
202034,466 12,531 11,650 23,736 8,894 (8,454)82,823 
__________
(a)Other primarily includes Exelon’s corporate operations, shared service entities, and other financing and investment activities.
(b)Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 22 — Supplemental Financial Information for additional information on total utility taxes.
(c)See Note 23 — Related Party Transactions for additional information on intersegment revenues.
PHI:
PepcoDPLACE
Other(a)
Intersegment
Eliminations		PHI
Operating revenues(b):
2021
Electric revenues$2,274 $1,212 $1,388 $— $(14)$4,860 
Natural gas revenues— 168 — — — 168 
Shared service and other revenues— — — 379 (366)13 
Total operating revenues$2,274 $1,380 $1,388 $379 $(380)$5,041 
2020
Electric revenues$2,149 $1,109 $1,245 $— $(18)$4,485 
Natural gas revenues— 162 — — — 162 
Shared service and other revenues— — — 372 (356)16 
Total operating revenues$2,149 $1,271 $1,245 $372 $(374)$4,663 
2019
Electric revenues$2,260 $1,139 $1,240 $— $(13)$4,626 
Natural gas revenues— 167 — — — 167 
Shared service and other revenues— — — 396 (383)13 
Total operating revenues$2,260 $1,306 $1,240 $396 $(396)$4,806 
Intersegment revenues(c):
2021$5 $7 $2 $380 $(381)$13 
20207 9 4 372 (375)17 
20195 7 3 396 (397)14 
Depreciation and amortization:
2021$403 $210 $179 $29 $— $821 
2020377 191 180 34 — 782 
2019374 184 157 39 — 754 
Operating expenses:
2021$1,871 $1,161 $1,201 $388 $(381)$4,240 
20201,799 1,120 1,123 378 (375)4,045 
20191,899 1,089 1,089 403 (396)4,084 
Interest expense, net:
2021$140 $61 $58 $8 $— $267 
2020138 61 59 10 — 268 
2019133 61 58 10 1 263 
Income (loss) before income taxes:
2021$311 $170 $133 $(11)$— $603 
2020259 100 71 (12)— 418 
2019259 169 99 (13)— 514 
Income taxes:
2021$15 $42 $(13)$(2)$— $42 
2020(7)(25)(41)(4)— (77)
201916 22 — — — 38 
PepcoDPLACE
Other(a)
Intersegment
Eliminations		PHI
Net income (loss):
2021$296 $128 $146 $(9)$— $561 
2020266 125 112 (8)— 495 
2019243 147 99 (12)— 477 
Capital expenditures:
2021$843 $429 $445 $3 $— $1,720 
2020773 424 401 6 — 1,604 
2019626 348 375 6 — 1,355 
Total assets:
2021$9,903 $5,412 $4,556 $4,933 $(60)$24,744 
20209,264 5,140 4,286 5,079 (33)23,736 
__________
(a)Other primarily includes PHI’s corporate operations, shared service entities, and other financing and investment activities.
(b)Includes gross utility tax receipts from customers. The offsetting remittance of utility taxes to the governing bodies is recorded in expenses in the Registrants’ Consolidated Statements of Operations and Comprehensive Income. See Note 22 — Supplemental Financial Information for additional information on total utility taxes.
(c)Includes intersegment revenues with ComEd, BGE, and PECO, which are eliminated at Exelon.
The following tables disaggregate the revenues recognized from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. For the Utility Registrants, the disaggregation of revenues reflects the two primary utility services of electric sales and natural gas sales (where applicable), with further disaggregation of these tariff sales provided by major customer groups. Exelon's disaggregated revenues are consistent with the Utility Registrants, but exclude any intercompany revenues.
2021
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Electric revenues
Residential$3,233 $1,704 $1,375 $2,441 $1,003 $694 $744 
Small commercial & industrial1,571 422 267 521 135 193 193 
Large commercial & industrial559 243 459 1,123 844 94 185 
Public authorities & electric railroads45 31 27 58 31 14 13 
Other(a)
926 229 371 634 205 201 229 
Total electric revenues(b)
$6,334 $2,629 $2,499 $4,777 $2,218 $1,196 $1,364 
Natural gas revenues
Residential$— $372 $518 $97 $— $97 $— 
Small commercial & industrial— 136 83 42 — 42 — 
Large commercial & industrial— — 147 7 — 7 — 
Transportation— 24 — 14 — 14 — 
Other(c)
— 7 68 8 — 8 — 
Total natural gas revenues(d)
$— $539 $816 $168 $— $168 $— 
Total revenues from contracts with customers$6,334 $3,168 $3,315 $4,945 $2,218 $1,364 $1,364 
Other revenues
Revenues from alternative revenue programs$42 $26 $12 $91 $53 $14 $24 
Other electric revenues(e)
30 4 11 5 3 2 — 
Other natural gas revenues(e)
— — 3 — — — — 
Total other revenues$72 $30 $26 $96 $56 $16 $24 
Total revenues for reportable segments$6,406 $3,198 $3,341 $5,041 $2,274 $1,380 $1,388 
2020
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Electric revenues
Residential$3,090 $1,656 $1,345 $2,332 $988 $652 $692 
Small commercial & industrial1,399 386 241 472 132 171 169 
Large commercial & industrial515 228 406 1,001 736 89 176 
Public authorities & electric railroads45 29 27 60 34 13 13 
Other(a)
884 225 309 613 218 190 207 
Total electric revenues(b)
$5,933 $2,524 $2,328 $4,478 $2,108 $1,115 $1,257 
Natural gas revenues
Residential$— $361 $504 $96 $— $96 $— 
Small commercial & industrial— 126 79 42 — 42 — 
Large commercial & industrial— — 135 4 — 4 — 
Transportation— 24 — 14 — 14 — 
Other(c)
— 4 29 6 — 6 — 
Total natural gas revenues(d)
$— $515 $747 $162 $— $162 $— 
Total revenues from contracts with customers$5,933 $3,039 $3,075 $4,640 $2,108 $1,277 $1,257 
Other revenues
Revenues from alternative revenue programs$(47)$16 $16 $21 $40 $(7)$(12)
Other electric revenues(e)
18 3 5 2 1 1 — 
Other natural gas revenues(e)
— — 2 — — — — 
Total other revenues$(29)$19 $23 $23 $41 $(6)$(12)
Total revenues for reportable segments$5,904 $3,058 $3,098 $4,663 $2,149 $1,271 $1,245 
2019
Revenues from contracts with customersComEdPECOBGEPHIPepcoDPLACE
Electric revenues
Residential$2,916 $1,596 $1,326 $2,316 $1,012 $645 $659 
Small commercial & industrial1,463 404 254 505 149 186 170 
Large commercial & industrial540 219 436 1,112 833 99 180 
Public authorities & electric railroads47 29 27 61 34 14 13 
Other(a)
888 249 321 650 227 204 218 
Total electric revenues(b)
$5,854 $2,497 $2,364 $4,644 $2,255 $1,148 $1,240 
Natural gas revenues
Residential$— $409 $474 $96 $— $96 $— 
Small commercial & industrial— 169 77 44 — 45 — 
Large commercial & industrial— 1 132 5 — 5 — 
Transportation— 25 — 14 — 14 — 
Other(c)
— 6 31 7 — 7 — 
Total natural gas revenues(d)
$— $610 $714 $166 $— $167 $— 
Total revenues from contracts with customers$5,854 $3,107 $3,078 $4,810 $2,255 $1,315 $1,240 
Other revenues
Revenues from alternative revenue programs$(133)$(21)$12 $(14)$(3)$(11)$— 
Other electric revenues(e)
26 13 12 10 8 2 — 
Other natural gas revenues(e)
— 1 4 — — — — 
Total other revenues$(107)$(7)$28 $(4)$5 $(9)$— 
Total revenues for reportable segments$5,747 $3,100 $3,106 $4,806 $2,260 $1,306 $1,240 
__________
(a)Includes revenues from transmission revenue from PJM, wholesale electric revenue and mutual assistance revenue.
(b)Includes operating revenues from affiliates in 2021, 2020, and 2019 respectively of:
•$41 million, $37 million, and $30 million at ComEd
•$20 million, $8 million, and $5 million at PECO
•$13 million, $10 million, and $8 million at BGE
•$13 million, $17 million, and $14 million at PHI
•$5 million, $7 million, and $5 million at Pepco
•$7 million, $9 million, and $7 million at DPL
•$2 million, $4 million, and $3 million at ACE
(c)Includes revenues from off-system natural gas sales.
(d)Includes operating revenues from affiliates in 2021, 2020, and 2019 respectively of:
•$1 million, $1 million, and $1 million at PECO
•$18 million, $10 million, and $18 million at BGE
(e)Includes late payment charge revenues.